Dual N-Back Brain Training Game

Based on the task originally proposed by [1], and adapted by
[2]. Dual N-Back has been shown to improve working memory over time.
For more information see [3] and [4].

Instructions

The goal of each level is to remember the state of the game exactly N timesteps ago.

The game board is a set of eight squares.
They will flash in a random order, at three seconds intervals.
When you recognize that the same square flashed exactly N steps ago, you press the
button.

Simultaneously, one letter is spoken at each time step.
When you recognize that the same letter was spoken exactly N steps ago, you press the
button.

Example sequence for N=2 game.

The player must remember the state of the game board N steps ago.

If you do well, N will increase on the next round.
If you don't do so well, N will decrease on the next round (down to N=1).
There are 20+N time steps in each round.

Notes:

This game is still in beta phase.
Please be patient for your favorite feature.
Planned features include
a dark theme,
a cloud-sync method for saving progress across devices,
ability to start back at N=1 on demand,
and more.

For feature requests and bug reports please contact me at
support@dual-n-back.io.
I will do my best to respond quickly.

Credits:

Based on the work of [1], [2], and others.
Audio clips adapted from [5], most of the icons are from [6].